 .err {
     height: 300px;
 }
 .err div{
     height: 300px;
     background: url("/public/images/err.jpg")no-repeat;
     background-size: 100%;
 }
 .err p{
     height: 300px;
     line-height: 150px;
     color: #fff;
     font-size: 26px;
     background: #ffb8bf;
     padding: 0;
     margin: 0;
     text-align: center;
 }